Wrong fuel in your Subaru Baja? Diesel in your Petrol Subaru?

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Subaru Fuel Drain


Filling up with Diesel in a Petrol Subaru is a common mistake to make. And its remedy hinges on an assortment of factors. Assuming you want to know what you have to do to sort it out then please read on.
Let us discuss the key variables to keep in mind when making a decision whether or not to have a fuel drain:

  1. How much Diesel have you put into the Subaru, considering that the fuel tank capacity of the Subaru Baja is most likely roughly 64 litres?
    1. Hardly any Diesel, something like 3.2 litres of Diesel in a Petrol Baja will typically not be a big problem. Experience has proven to us that anything less than 3.2 litres (which is roughly 5% of the entire fuel tank volume) is generally able to be adequately diluted through entirely filling the rest of the tank with the right fuel.
      It's quite unusual to find a vehicle having difficulties due to lower than 5% wrong fuel contamination. Be aware that it is uncommon - certainly not impossible to find. You can get certain vehicles that will not endure any amount of fuel contamination in the slightest.
    2. Between 3.2 and 6.4 litres of Diesel in the Subaru (5 to 10%) is a 50/50 situation. Our practical experience has confirmed that as many motorists get away with this as those people who break down. When deciding upon whether to risk it and basically top it up recognise that it is very much like betting everything on black - you will have a 50/50 chance of it working.
    3. Anything over 6.4 litres of Diesel in your Petrol Baja should promptly be drained as your likelihood of getting away with that quantity of contamination is very likely below one in fifty - really long odds.
  2. Put some Diesel in a Petrol Subaru and drove it: Have you noted any performance difficulties after putting the incorrect fuel in your Baja? In that case, get it removed irrespective of the quantity of Diesel or the contamination percentage. Continuing to run driving an automobile that is now starting to suffer the consequences of fuel contamination will probably definitely lead to progressively more damage affecting your fuel system components.
  3. Do you want reassurance?
    Then simply just get it drained. No matter the contamination percentage, there is invariably a certain level of risk connected to running a Petrol engine on Petrol contaminated with the incorrect fuel. Likely implications of driving on the incorrect fuel include the engine refusing to start, running lumpy, loss in power, degradation of the high-pressure pump, damaged or blocked injectors, and the like. These are a few of the most typical Diesel in Petrol symptoms, and should you notice any of them stop and get it drained right now.

Steer clear of having any unqualified mechanic to attend your automobile. We are Subaru specialists and have the credentials and practical experience needed to make certain that you are back on the road with no hassle or worry.

Put Diesel in a Petrol Subaru

Unintentionally put Diesel in a Petrol Subaru? Or even put contaminated fuel in your Subaru Baja?

Give us a call for Help & Guidance

Call us and get genuine recommendations and practical help for your particular circumstances

We come out and do the fuel drain

We can come to you to undertake the fuel drain & cleanse right there on scene

All done & You Get Going Again

When we have finished you will be able to get back moving and get on with your day

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain specialists in the UK, boasting national coverage, for Subaru motorists particularly. We mainly attend to:

  • Unleaded petrol in Diesel Car
  • Diesel in Unleaded Petrol Car
  • AdBlue contamination
  • Water contamination

We are Subaru specialists and have successfully drained hundreds of Petrol Subaru vehicles. No matter if it is roadside, on a station forecourt, or even at home, we can get you on the road again.

The Procedure

The system of getting rid of Diesel from a Petrol car is fundamentally similar for a large number of vehicle makes. Of course it may vary to some extent as every brand has their unique distinct fuel system. Having said that it still basically observes the following guidelines:

Petrol in Diesel Subaru

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Subaru

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Subaru

Vehicle Restart

Get the car up and running again

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Diesel in Petrol FAQs

When someone has put Diesel in a Petrol car they have a few very common questions. So we have compiled a list of the most Frequently Asked Questions for you

I put Diesel in a Petrol car and drove it. What do I do?


Turn off the car as soon as possible and call us. Continuing to run a vehicle on the wrong fuel can potentially damage it. We will be able to give you advice and assistance based on your circumstances

Will driving a Petrol car on Diesel cause damage to it?


It can. However, if the problem is caught and remedied quickly the risks will be minimal. Of the 1,500 vehicles we attend every month, less than 0.5% have suffered and substantial damage requiring parts replacement.

How much Diesel can I get away with in a Petrol car?


The safe answer is none. However you might be able to get away with a very low contamination ratio. That being said, we always highly recommend draining anything over a 5% contamination ratio asap.

I know about petrol in diesel, but what about Super Unleaded?


Putting Super Unleaded, or Shell V-Power, BP Ultimate Unleaded, etc, will have the exact same effect as putting regular unleaded petrol in your diesel car and will need to be drained out and flushed.

Will getting you to do a fuel drain void my warranty?


No! The EU Block Exemption Regulations clearly state that "the work can be carried out by as long as that garage uses manufacturer approved parts and correctly follows the manufacturer's service schedule."

Can I top it up with Petrol and add some 2-stroke oil?


This might work on some vehicles in some cases, but in the majority on instances it won't and you risk damaging the Lambda sensors as well as fuel pump and injectors, just as a regular misfuel.

Get in Touch

In the event that you have any concerns or want some help please Contact Us!
We are able to get you moving once again.

24 hour Subaru Helpline

0333 366 0103

Our Corporate Office

Fuel Fixer Ltd, Linx House, 147 London Road, East Grinstead, RH19 1ET


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